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## What should happen in order for the bulb to light up?

When a light bulb connects to an electrical power supply, an electrical current flows from one metal contact to the other. As the current travels through the wires and the filament, the filament heats up to the point where it begins to emit photons, which are small packets of visible light.

## How should a circuit be set up in order for a light bulb to be lit up by a battery?

The final two arrangements that lead to a lit light bulb involve placing the bulb at the negative terminal of the cell, either by making contact to it with the ribbed edge or with the bottom base. A wire must then connect the other part of the bulb to the positive terminal of the cell.

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## Why do we need a complete circuit for the bulb to light?

For electrons to do their job in producing light, there must be a complete circuit so they can flow through the light bulb and then back out.

## What does the bulb do in a circuit?

The key functions of a battery and bulb in a circuit are explained. A battery is a source of energy which provides a push – a voltage – of energy to get the current flowing in a circuit. A bulb uses the electrical energy provided by the battery, but does not use current.

## What makes up the circuit in a light bulb?

A simple electric circuit contains a power source (battery), wires, and a resistor (light bulb). In a circuit, electrons flow from the battery, through the wires, and into the light bulb.

## How to troubleshoot a circuit in a light bulb?

Troubleshooting Your Circuit Make sure all of the wires are connected properly. In order to complete the circuit, all wires must be touching the metal parts of each component. Check the filament in your light bulb. Your bulb will not light if the filament is broken. Test the charge of the battery.

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## How are wires connected to a light bulb?

One wire is connected to the metal casing & one wire is connected to the metal tip When the wires in the circuit are connected to the metal casing and metal tip of the bulb, there is a closed (or complete) circuit with the bulb. Electricity will be able to flow through the filament, causing the bulb to light up.

## How are three light bulbs connected in series?

If a wire joins the battery to one bulb, to a second bulb, to a third bulb, then back to the battery, in one continuous loop, the bulbs are said to be in series. If the three light bulbs are connected in series, the same current flows through all of them, and the voltage drop is 1.5 V across each bulb and…